For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github.
For the list of Elastic supported plugins, please consult the Elastic Support Matrix.

The socket receive buffer size in bytes.
If option is not set, the operating system default is used.
The operating system will use the max allowed value if receive_buffer_bytes is larger than allowed.
Consult your operating system documentation if you need to increase this max allowed value.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one.
It is strongly recommended to set this ID in your configuration. This is particularly useful
when you have two or more plugins of the same type, for example, if you have 2 udp inputs.
Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

The type is stored as part of the event itself, so you can
also use the type to search for it in Kibana.

If you try to set a type on an event that already has one (for
example when you send an event from a shipper to an indexer) then
a new input will not override the existing type. A type set at
the shipper stays with that event for its life even
when sent to another Logstash server.